linux-kernel - [PATCH] perf: fix building warning on ARM 32.

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Message-ID: <1418695810-74455-1-git-send-email-wangnan0@huawei.com>
Date:	Tue, 16 Dec 2014 10:10:10 +0800
From:	Wang Nan <wangnan0@...wei.com>
To:	<a.p.zijlstra@...llo.nl>, <paulus@...ba.org>, <mingo@...hat.com>,
	<acme@...nel.org>, <ak@...ux.intel.com>, <namhyung@...nel.org>
CC:	<lizefan@...wei.com>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] perf: fix building warning on ARM 32.

Commit 85c116a6c introduces asprintf() call and matches '%ld' to a u64
argument, which is incorrect on ARM.

   CC       /home/wn/util/srcline.o
 util/srcline.c: In function 'get_srcline':
 util/srcline.c:297:6: error: format '%ld' expects argument of type 'long int', but argument 4 has type 'u64' [-Werror=format]
 cc1: all warnings being treated as errors
 make[1]: *** [/home/wn/util/srcline.o] Error 1

Signed-off-by: Wang Nan <wangnan0@...wei.com>
---
 tools/perf/util/srcline.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index e73b6a5..42cb642 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -294,7 +294,7 @@ out:
 	}
 	if (sym) {
 		if (asprintf(&srcline, "%s+%ld", show_sym ? sym->name : "",
-					addr - sym->start) < 0)
+					(long int)(addr - sym->start)) < 0)
 			return SRCLINE_UNKNOWN;
 	} else if (asprintf(&srcline, "%s[%lx]", dso->short_name, addr) < 0)
 		return SRCLINE_UNKNOWN;
-- 
1.8.4

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